3 files changed, 12 insertions, 10 deletions
diff --git a/routers/api/v1/repo/notes.go b/routers/api/v1/repo/notes.go
index 0b259703de..e7e00dae41 100644
--- a/routers/api/v1/repo/notes.go
+++ b/routers/api/v1/repo/notes.go
@@ -66,7 +66,7 @@ func getNote(ctx *context.APIContext, identifier string) {
 		return
 	}
 
-	commitSHA, err := ctx.Repo.GitRepo.ConvertToSHA1(identifier)
+	commitID, err := ctx.Repo.GitRepo.ConvertToGitID(identifier)
 	if err != nil {
 		if git.IsErrNotExist(err) {
 			ctx.NotFound(err)
@@ -77,7 +77,7 @@ func getNote(ctx *context.APIContext, identifier string) {
 	}
 
 	var note git.Note
-	if err := git.GetNote(ctx, ctx.Repo.GitRepo, commitSHA.String(), &note); err != nil {
+	if err := git.GetNote(ctx, ctx.Repo.GitRepo, commitID.String(), &note); err != nil {
 		if git.IsErrNotExist(err) {
 			ctx.NotFound(identifier)
 			return
diff --git a/routers/api/v1/repo/repo.go b/routers/api/v1/repo/repo.go
index 64c41d3a97..1767a7fa67 100644
--- a/routers/api/v1/repo/repo.go
+++ b/routers/api/v1/repo/repo.go
@@ -253,6 +253,7 @@ func CreateUserRepo(ctx *context.APIContext, owner *user_model.User, opt api.Cre
 		DefaultBranch: opt.DefaultBranch,
 		TrustModel:    repo_model.ToTrustModel(opt.TrustModel),
 		IsTemplate:    opt.Template,
+		ObjectFormat:  git.ObjectFormatFromID(git.Sha1),
 	})
 	if err != nil {
 		if repo_model.IsErrRepoAlreadyExist(err) {
diff --git a/routers/api/v1/utils/git.go b/routers/api/v1/utils/git.go
index 32f5c85319..eb82c50544 100644
--- a/routers/api/v1/utils/git.go
+++ b/routers/api/v1/utils/git.go
@@ -69,27 +69,28 @@ func searchRefCommitByType(ctx *context.APIContext, refType, filter string) (str
 	return "", "", nil
 }
 
-// ConvertToSHA1 returns a full-length SHA1 from a potential ID string
-func ConvertToSHA1(ctx gocontext.Context, repo *context.Repository, commitID string) (git.SHA1, error) {
-	if len(commitID) == git.SHAFullLength && git.IsValidSHAPattern(commitID) {
-		sha1, err := git.NewIDFromString(commitID)
+// ConvertToObjectID returns a full-length SHA1 from a potential ID string
+func ConvertToObjectID(ctx gocontext.Context, repo *context.Repository, commitID string) (git.ObjectID, error) {
+	objectFormat, _ := repo.GitRepo.GetObjectFormat()
+	if len(commitID) == objectFormat.FullLength() && objectFormat.IsValid(commitID) {
+		sha, err := objectFormat.NewIDFromString(commitID)
 		if err == nil {
-			return sha1, nil
+			return sha, nil
 		}
 	}
 
 	gitRepo, closer, err := git.RepositoryFromContextOrOpen(ctx, repo.Repository.RepoPath())
 	if err != nil {
-		return git.SHA1{}, fmt.Errorf("RepositoryFromContextOrOpen: %w", err)
+		return objectFormat.Empty(), fmt.Errorf("RepositoryFromContextOrOpen: %w", err)
 	}
 	defer closer.Close()
 
-	return gitRepo.ConvertToSHA1(commitID)
+	return gitRepo.ConvertToGitID(commitID)
 }
 
 // MustConvertToSHA1 returns a full-length SHA1 string from a potential ID string, or returns origin input if it can't convert to SHA1
 func MustConvertToSHA1(ctx gocontext.Context, repo *context.Repository, commitID string) string {
-	sha, err := ConvertToSHA1(ctx, repo, commitID)
+	sha, err := ConvertToObjectID(ctx, repo, commitID)
 	if err != nil {
 		return commitID
 	}